Notes on robotics, vision, and systems.
This article first introduces the imaging principle of pinhole cameras and the conversion between physical coordinates and pixel coordinates. It then introduces a distortion model based on real-world camera issues, presents undistortion formulas, and includes a detailed example program.
Introduces how to look up literature indexed on various websites and how to download it, as well as how to check the impact factors of major journals.
Some time has passed since the recommendation-based graduate admission process ended. Here, I have summarized my experience and offered some advice in the hope that younger students who read this article will find it helpful.
If you found this article, you're clearly taking this seriously. Keep it up! I believe you'll get the best outcome!
Use the Tampermonkey extension with IDM direct links to download from Baidu Netdisk without speed limits.
Starting with the creation of a workspace and package, this article explains the creation and compilation steps and provides a detailed summary of commonly used ROS commands. It then uses specific examples to explain in detail how to create nodes, services, launch files, and dynamic parameters, and demonstrates how they are used.
CMake is a cross-platform, open-source meta-build system that can build, test, and package software. It can support multiple native build environments. More and more projects are using CMake as their build tool, making CMake a mainstream build system.
The KNN algorithm, or K-nearest neighbors algorithm, works by predicting the class of a new value x based on which class most of its K nearest neighbors belong to. The same idea applies to image recognition.
This article aims to recognize digits in camera images. Practical applications include license plate number recognition and recognizing printed digits on A4 paper in some competitions. Camera-based digit recognition consists of two steps: 1. Extract the ROI from the image, such as the rectangular license plate area or the A4 paper image. 2. Recognize digits in the ROI. Digit recognition is relatively straightforward, so this article first introduces its methods and principles.
Most examples online show a Fork me on GitHub ribbon, but the principle for implementing Follow me on CSDN is the same. Just download and edit the image for the effect you want, upload it to an image host (or CSDN), obtain the image URL, and replace the URL in the code.
